added initatePayment and checkTxnStatus

src/main/java/com/billpaymentservice/bbps/dto/AdditionalInfo.java

@@ -1,15 +1,43 @@
 package com.billpaymentservice.bbps.dto;
 
+
+import jakarta.persistence.*;
+import jakarta.validation.constraints.*;
 import lombok.Getter;
 import lombok.Setter;
 
-     @Getter
-     @Setter
-	public class AdditionalInfo {
-	    private String paramConfigId;
-	    private String paramName;
-	    private String dataTypeDAO;
-	    private String dataTypeModel;
-	    private boolean optional;
-	    private boolean visibility;
-	    }
+@Getter
+@Setter
+@Entity
+@Table(name = "additional_info")
+public class AdditionalInfo {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;  // primary key for the table
+
+    @Column(name = "param_config_id", nullable = false)
+    @NotBlank(message = "Param Config ID cannot be blank")
+    private String paramConfigId;
+
+    @Column(name = "param_name", nullable = false)
+    @NotBlank(message = "Param name cannot be blank")
+    private String paramName;
+
+    @Column(name = "data_type_dao")
+    private String dataTypeDAO;
+
+    @Column(name = "data_type_model")
+    private String dataTypeModel;
+
+    @Column(name = "optional", nullable = false)
+    private boolean optional;
+
+    @Column(name = "visibility", nullable = false)
+    private boolean visibility;
+
+    // 🔗 Many AdditionalInfos belong to one Biller
+    @ManyToOne
+    @JoinColumn(name = "biller_id", nullable = false)
+    private BillerDAO biller;
+}